lua-timer: explicitly restore Lua stack across callbacks.

diff --git a/src/core/lua-bindings/lua-timer.c b/src/core/lua-bindings/lua-timer.c
index 0fa5b4d..eb87494 100644 (file)
--- a/src/core/lua-bindings/lua-timer.c
+++ b/src/core/lua-bindings/lua-timer.c
@@ -107,9 +107,12 @@ static void timer_lua_cb(mrp_timer_t *timer, void *user_data)
 {
     timer_lua_t *t   = (timer_lua_t *)user_data;
     int          one = t->oneshot;
+    int          top;
 
     MRP_UNUSED(timer);
 
+    top = lua_gettop(t->L);
+
     if (mrp_lua_object_deref_value(t, t->L, t->callback, false)) {
         mrp_lua_push_object(t->L, t);
 
@@ -124,6 +127,8 @@ static void timer_lua_cb(mrp_timer_t *timer, void *user_data)
         mrp_del_timer(t->t);
         t->t = NULL;
     }
+
+    lua_settop(t->L, top);
 }